Wrench



(No Model.)

J-. LiB-B;

WRENCH.

No; 288,713,, Patented Nov. 20, 1883.

.zltiorneyj UNITED STATES PATENT OFFICE.

JOHNLEE, OF STERLING, onIo.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 288,713, dated November20, 1883.

Application filed August 23, 1883. (No model.)

To all whom 2125 may concern:

Be it known that I, JOHNLEE, a citizen of the United States, residing atSterling, in the county of Wayne and State of Ohio, have invented a newand useful Wrench, of which the following is a specification, referencebeing had to the accompanying drawings.

This invention relates to that class of' wrenches which are providedwith, a sliding 1o jaw; and itconsists in certain improvements in theconstruction of the same, having for their object to produce a devicewhich shall possess superior advantages in point of simplicity,durability, inexpensiveness, and general efficiency, as will behereinafter fully described, and particularly pointed out in the claims.

In the drawings hereto annexed, Figure l is a side View of a wrenchembodying my improvements. Fig. 2 is a vertical longitudinal sectionalview of the same; and Fig. 3 is a section on line as :0, Fig. 2. I

The same letters refer to the same parts in all the figures.

In the drawings, A designates the shank of the wrench; B, the fixed jawat the end of the same, and Othe handle. The side of the shank isprovided with teeth D.

E is the movable jaw, which is mounted and slides upon the shank A. Thejaw E is provided with two laterally-proj ecting straps or brackets. aa, to which is secured a bar, F, provided with teeth G, which engagetheteeth D of the shank A. The inner side of the jawE has atapering recess,H, in which is fitted a wedge, I, having a stem, J, that projects be-;low the jaw E.

Swiveled upon the lower end of the jaw E is a cylindrical burr, K,having a spiral groove, L, engaging a flange or stud, M, upon the stem Jof the wedge. The said stem is also provided with flanges N, overlappingthe sides of the shank A and the burr K, and which serve to guide thewedge-when operated. The burr K is provided with a thumb-piece, O, bymeans of which it may be easily turned.

The operation will be easily understood. By turning the burr in onedirection the wedge is lowered, thus enabling the movable jaw to bemoved upon the shank. By turning the burr in the opposite direction thewedge is raised and the jaw tightened, and held securely upon the shankin the position to which it may have been adjusted.

I claim as my invention and desire to secure by Letters Patent of theUnited States- 1. In awrench,the combination of the shank, the movablejaw having an interior beveled recess, a wedge fitted in said recessadjoining the shank,and having a stem extending below the jaw, and aburr mounted upon the lower end of said jaw and engaging a flange uponthe said stem, substantially as set forth.

2. In a wrench, the combination of the shank, the movable jaw having aninterior beveled recess, a wedge fitted in said recess adjoining theshank,and having a stem extending below the jaw, flanges projecting fromsaid stem at the sides of the shank, and a burr swiveled upon the lowerend of the jaw, and having a suitable thumb-piece and a spiral flangeengaging a stud upon the stem of the wedge, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

, JOHN LEE.

Witnesses:

LEwIs N. STIELKE, ROBERT A. FINN.

